The effects of pullulanase and gelatin on properties of films were studied.The results showed that: compared with the corn starch films,pullulanase film showed smoother surface and exhibited enhanced thermal stability and heat seal ability;the tensile strength,water vapor permeability and light transmittance increased by 75%,18% and 35%,respectively;the elongation at break decreased by 53%.Compared with pullulanase modified starch films without gelatin,the films with gelatin showed rougher surface,weakened heat seal ability,enhanced water resistance ability and Light resistance ability.When gelatin was 10% in the solution,the tensile strength increased by 17.6%;when gelatin was 25 percent in the solution,the elongation at break increased by 54.3%;the thermal stability was better at 15% of gelatin.